Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd737c18b71a70fa…

MALICIOUS

PDF

432.9 KB Created: 2022-03-09 03:11:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: c0374d20a5210c0a83c6f5b14a0ac05b SHA-1: 651fdcb1e7004f15d212c039ea290b55e2e84866 SHA-256: cd737c18b71a70fa00ce2f11a9f4b17cbccdf5dc333988b4cede0e7c70c330a4
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5320

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://mifuj.co.za/XSRYdR1H?utm_term=coshh+data+sheets+free PDF link annotation
    • https://jnvhardoi.org/ckfinder/userfiles/files/nulofinamibagide.pdfIn PDF document text
    • http://king-tableware.com/uploads/files/202203011709382784.pdfIn PDF document text
    • http://mirograd.com/img/file/44946531523.pdfIn PDF document text
    • http://karcannakliyat.com/userfiles/file/29051934359.pdfIn PDF document text
    • https://dental-essence.com/admin/userfiles/file/4934551617.pdfIn PDF document text
    • http://sabinelokhorst.com/media-upload/files/dubofegosijoborudelafajes.pdfIn PDF document text
    • http://umffz21.ru/admin/ckfinder/userfiles/files/66150330932.pdfIn PDF document text
    • https://bykevin.com/wp-content/plugins/super-forms/uploads/php/files/555508c974567000ec3a2b606e1f9a46/mataxapizaxuguno.pdfIn PDF document text
    • https://www.alongsideasia.com/wp-content/plugins/super-forms/uploads/php/files/ea4fe4cb42ddb8fc7009c79bb333b547/93344701515.pdfIn PDF document text
    • http://teresachild.com/upload/files/kaxemewudumer.pdfIn PDF document text
    • http://safakkereste.com/kcfinder/upload/files/difixinovegokizasufuv.pdfIn PDF document text
    • http://communication-pointcom.fr/userfiles/medias/24172088015.pdfIn PDF document text
    • http://schouteninterieurwerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16209b4cf9f757---88480572469.pdfIn PDF document text
    • https://www.supergram.cz/kcfinder/upload/files/54171521340.pdfIn PDF document text
    • http://duplisite.com/userfiles/file/subolivumupotazerop.pdfIn PDF document text
    • http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/1621fe23ea018c---padezerigejanud.pdfIn PDF document text
    • https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620bd85f0509a---75858273307.pdfIn PDF document text
    • http://cuspsurgeons.com/admin/kcfinder/upload/files/65880624139.pdfIn PDF document text
    • http://ags-sib.ru/ckfinder/userfiles/files/77166977278.pdfIn PDF document text
    • http://prometric.ir/admin/upload/files/52005819554.pdfIn PDF document text
    • http://tsyrulnikov.ru/upload/file/kilazenefolirededusuw.pdfIn PDF document text
    • https://www.oalysa.cz/ckfinder/userfiles/files/49224845247.pdfIn PDF document text
    • http://dworbieland.pl/userfiles/file/bamogozedilebeni.pdfIn PDF document text
    • https://www.lowdoc-loans.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1620620245c3ab---bepakarusemup.pdfIn PDF document text
    • https://thermocalnepal.ramjanki.com/ckeditor/kcfinder/upload/files/fikerefezafeloregutatixo.pdfIn PDF document text
    • https://tezerwatch.com/file/upload/files/03-05-04-20-20-63.pdfIn PDF document text
    • http://www.nagsa.es/ckfinder/userfiles/files/fizopasevozowo.pdfIn PDF document text
    • https://indolabtek.com/Uploads/userfiles/files/xusipodasufaraxakizedak.pdfIn PDF document text
    • http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/162032f3b06cd9---vujoludetowapol.pdfIn PDF document text
    • https://www.econiwas.com/econiwascontrol/bower_components/ckeditor/kcfinder/upload/files/sagilovagilupekewemeli.pdfIn PDF document text
    • http://www.lnk-creation.fr/upload/file/biror.pdfIn PDF document text
    • http://www.jfac.kr/ckfinder/userfiles/files/57973563140.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00065943.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65943 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0006705e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6705E 16992 bytes
SHA-256: 7269585f09ce882455da1a9c8cecf7fd2d14f5ffdac71941934be396aa97d2f9
font_02_sfnt_off00069c15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69C15 10240 bytes
SHA-256: eab310e9820807ec83728527e5ae58b77a519862f59b9ac98cd294c23cdb65c2